Feed-water heater.



No. 729,283. .7 PATENT-ED MAY-2.6, 190s.

' 1). B. GUMMING.

FEED WATER HEATER.

APPLIULTION FILED FEB. 18, 1903.

80 MODEL.

z I ll 0 (Z Z a H 1 v 71/ B L 9 k LL UNITED ST Tssj PATENT Patented May26, 1903.

OFFICE.

FEED-WATER HEATER.

SPECIFIQATI QN'forming'part of Letters Patent No. 729,283, dated May 26,1903.

- Applicationfiled February 12,1903. Serial No. 143,839. (no model.)

To all whom it may concern:

Be it known that I,'DAV,ID BRUCE OUMMING, a subject of the King of GreatBritain, residing at Baltimore, State of Maryland, have invented certainnew and useful Improvements in Feed-Water Heaters, of which thefollowing is a specification.

This invention relates to improvements in that class of liquid orfeed-water heaters in which steam is commingled with the liquid orfeed-water.

The object of the invention is to provide an improved deviceof thischaracter in which the steam will act on the liquid or feed-waterefiectively to raise every drop or particle thereof to a hightemperature and in a very expeditious manner.

The invention consists of certain constructions, arrangements, andcombinations of, parts hereinafter fullydescribed and claimed, referencebeing had .to the accompanying drawings, in Which Figure 1 is a verticallongitudinal sectional view of the improvement. Fig. 2 is a longitudinalsectional View taken on the line 2 2 of Fig. 1. Fig. 3 is a detailsectional View of the water-retarder, and Fig. 4 is a detail sectionalview of a portion of the retarder and the adjoining parts.

Referring to the .draWings,-the letter A designates an exterior shell orvessel, which in the present instance is cylindrical and adapt-' ed tobe secured ina vertical position. A casing a has position with the shellA, and

the walls of said casing, together with the surrounding walls of thevessel, form an annular water-chamber b, and'the interior of said.casing forms acommingling-chamber b. The said inner casing a is providednear its up per open end with-an interior, shoulder at, inwhich isfitted a foraminous cylindrical shell 0, open at its top and bottom andextending above the upper edge of the said casing a, and secured by anysuitable means within the said cylinder and at the bottom of said shellis a funnel-shaped water-retarder d, pro

vided with corrugated side walls (1, having perforations d and d at thesides and bottoms of the corrugations, as illustrated in the drawings.

A central tube (2 has position within the funnel-shape retarder andcloses the lower the liquid' will be checked end of said retarder, andthereby insures that V in its passage through the retarder and preventsthe escape of liquid except through the'perforations d and (i while the"steam willpass freely through said tube into the comminglingchamber 1).1

A cylinder e'ha's position within the casing a and extends from thefunnel-shape re- 'tardertoward the bottom of said'casing. This cylinderissmaller in diameter than the casinga and when in position forms aninsulating spacee between said cylinder and casing. The advantage inthis construction will be hereinafter pointed out.

. At the top of the casing A is formed a steam-inlet-opening f, and atthe bottom of ,thecasing and Within the walls of the commingling-chamberb is; formed a dischargeopening g, adapted to lead (bya pipe or thelike) the heated water to the boiler. (Not shown.) Both of saidopeningsin the present instance are in alinement with each other and also inalinement with the tube 01 of the Water-retarder d.

In connection with the before-named parts I may employ afiltering-chamber B in communication with the lower end of thewaterchamber '19 and separated therefrom by a perforated screen or plateh, said filtering-chamher being intended for the reception of charcoalor other filtering media and being provided with aninlet 't' for thewater; but this filter maybe dipensed with, if desired.

The letter j designates feet by which the device maybe fastened to abulkhead or other suitable support.

In practical operation the Water is fed into thefilter and then passesint-o the annular water-chamber 1), its level being always maintainedoniaplane-below, the upper edge of the foraminous shell 0, preferably asindicated by'the dotted line coin Fig. 1. Live steam enters the openingfand is directed towardthe water-retarder d and commingles with the feedwater as the" latter spurts through the-openings in the foraminous shell0. The water and steam then passes into the retarder d and tricklesslowly down the corrugated inclined walls and out through theperforations d and 01 and the jets of water from said perforations aredirected against ICO the cylinder e and conveyed to the bottom and outthrough the opening g, the feedwater being thus thoroughly heated beforepassing finally to the boiler.

It will be understood that the water passing from the filtering-chamberB into the annular chamber 1) is cold and in passing upward reduces thetemperature of the walls of the inner casing a, and this reduction oftemperature tends to cool the liquid on the interior of said casing. Inorder to prevent this reduction of temperature from acting on the liquidafter it has left the retarder, the cylinder e and insulator-space e isprovided, so that the water after leaving the retarder will be directedby the said cylinder to the discharge-opening g without permitting thelatter to flow down the chilled walls of the casing a.

The heater is placed above the water-level of the boiler, either insideor outside the latter, so that the feed-water after being thoroughlyheated will flow by gravity into the water-space of the boiler.

It will be understood that the invention may 'be employed for heatingliquids other than water.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-- 1. In a feed-water device thecombination of an outer shell; a casing within said outer shell; aforaminous cylindrical shell open at both ends and extending above theupper edge of said casing, and a retarder sustained within said innercasing below said foraminous shell.

2. In a feed-water device the combination of an outer shell providedwith a water-inlet; a casing within said outer shell and provided ineach end with an opening, and a perforated funnel-shape water-retarderinterposed between the openings in the ends of said casing.

3. In a feed-water device the combination of an outer shell providedwith steam and water inlets; acasing within said outer shell andprovided near its upper end with a shoulder; a perforated shellsupported by the shoulder of said casing, and a retarder in said casingbelow the perforations of said shell.

4. In a feed-water device the combination of an outer shell providedwith steam and water inlets; a casing within said outer shell andprovided with an outlet and a funnel-shape water-retarder interposedbetween the inlets of the outer shell and the outlet of the casing, saidretarder being closed at one end by a central tube.

5. In a feed-water device the combination of an outer shell providedwith water and steam inlets; a casing within said outer shell and havinga bottom opening; a foraminous shell sustained by said inner shell, anda funnel-shape retarder sustained within said inner shell between theforaminous shell and the bottom opening of said inner shell.

6. In a device of the class described the combination of an outer shellprovided with a steam-inlet; a casing within said shell; a retardersustained by said casing, and a cylinder interposed between said casingand retarder for the purpose set forth.

7. In a device of the class described the combination of an outer shell;a casing within said shell and provided near its upper end with ashoulder; a chamber between said shell and easing; a perforated shellsupported by the shoulder of said casing; a cylinder within said casingbelow said perforated shell; an insulating-space between said cylinderand casing, and a device within said cylinder and below said perforatedshell for retarding the flow of liquid through said cylinder.

8. In a device of the class described the combination of an outer shell;a casing within said shell; a chamber between said shell and easing; acylinder within said casing and afunnel-shape retarder sustained withinsaid cylinder.

9. In a device of the class described the combination of an outer shell;a casing within said shell; a chamber between said shell and easing; acylinder within said casing; an insulating-space between said cylinderand casing; and a perforated funnel-shape retarder suspended within saidchamber whereby the cylinder will prevent the liquid from striking thewall of thecasing as it is discharged from the perforations of saidretarder.

10. In a device of the class described the combination of an outer shellhaving steam and liquid inlets; a casing within said shell; a chamberbetween said shell and casing; and a funnel-shape retarder sustainedwithin said casing, said retarder having a tube which closes its smallerend whereby the steam may pass freely through the retarder while theliquid is held in check.

11. In a device of the class described the combination of an outershell; a casing within said shell; a chamber between said shell andcasing, and a retarder in said casing, said retarder having perforatedcorrugated sides.

In testimony whereof I affix my signature in the presence of twowitnesses.

DAVID BRUCE CUMMING.

Witnesses:

CHARLES E. MANN, J r., G. FERDINAND VOGT.

